Hi,
I created a personal workspace on atlassian, added the Xray add-on, and I made a project(MCP) where I added a Test issue (MCP-8) and two Test Executions which include this Test (MCP-9 and MCP-10).

I performed a GET request on the following link in order to get information about the Test issue: https://<my-host-name>.atlassian.net/rest/api/2/issue/MCP-8 . Since there are the two Test Execution linked to this Test, I was expecting to find the Test Executions mentioned in the received JSON.
Do you have any idea how could I get the Test Executions related to a Test, either via REST or maybe JQL query?
Here is the JSON response I got about the Test issue:
{ "expand": "renderedFields,names,schema,operations,editmeta,changelog,versionedRepresentations", "id": "10008", "self": "https://<my-host-name>.atlassian.net/rest/api/2/issue/10008", "key": "MCP-8", "fields": { "statuscategorychangedate": "2020-12-18T09:50:03.027+0200", "issuetype": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/issuetype/10008", "id": "10008", "description": "This is the Xray Test Issue Type. Used to define test cases of different types that can be executed multiple times using Test Execution issues.", "iconUrl": "https://<my-host-name>.atlassian.net/secure/viewavatar?size=medium&avatarId=10551&avatarType=issuetype", "name": "Test", "subtask": false, "avatarId": 10551 }, "timespent": null, "customfield_10030": null, "project": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/project/10001", "id": "10001", "key": "MCP", "name": "My Classic Project", "projectTypeKey": "software", "simplified": false, "avatarUrls": { "48x48": "https://<my-host-name>.atlassian.net/secure/projectavatar?pid=10001&avatarId=10421", "24x24": "https://<my-host-name>.atlassian.net/secure/projectavatar?size=small&s=small&pid=10001&avatarId=10421", "16x16": "https://<my-host-name>.atlassian.net/secure/projectavatar?size=xsmall&s=xsmall&pid=10001&avatarId=10421", "32x32": "https://<my-host-name>.atlassian.net/secure/projectavatar?size=medium&s=medium&pid=10001&avatarId=10421" } }, "customfield_10031": null, "fixVersions": [], "aggregatetimespent": null, "resolution": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/resolution/10000", "id": "10000", "description": "Work has been completed on this issue.", "name": "Done" }, "customfield_10029": null, "resolutiondate": "2020-12-18T09:50:03.019+0200", "workratio": -1, "watches": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/issue/MCP-8/watchers", "watchCount": 1, "isWatching": true }, "issuerestriction": { "issuerestrictions": {}, "shouldDisplay": false }, "lastViewed": "2020-12-17T11:39:50.622+0200", "created": "2020-12-14T13:02:32.598+0200", "customfield_10020": null, "customfield_10021": null, "customfield_10022": null, "customfield_10023": null, "priority": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/priority/3", "iconUrl": "https://<my-host-name>.atlassian.net/images/icons/priorities/medium.svg", "name": "Medium", "id": "3" }, "customfield_10024": null, "customfield_10025": "3_*:*_1_*:*_2187_*|*_10004_*:*_1_*:*_334041729_*|*_10003_*:*_1_*:*_6529_*|*_10005_*:*_1_*:*_0", "labels": [], "customfield_10016": null, "customfield_10017": null, "customfield_10018": { "hasEpicLinkFieldDependency": false, "showField": false, "nonEditableReason": { "reason": "PLUGIN_LICENSE_ERROR", "message": "The Parent Link is only available to Jira Premium users." } }, "customfield_10019": "0|i0001r:", "timeestimate": null, "aggregatetimeoriginalestimate": null, "versions": [], "issuelinks": [], "assignee": null, "updated": "2020-12-18T09:50:03.026+0200", "status": { "self": "https://<my-host-name>.net/rest/api/2/status/10005", "description": "", "iconUrl": "https://<my-host-name>.atlassian.net/", "name": "Done", "id": "10005", "statusCategory": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/statuscategory/3", "id": 3, "key": "done", "colorName": "green", "name": "Done" } }, "components": [], "timeoriginalestimate": null, "description": "Given the user existsWhen the user executes a test caseThen the user fills the test case result", "customfield_10010": null, "customfield_10014": null, "timetracking": {}, "customfield_10015": null, "customfield_10005": null, "customfield_10006": null, "customfield_10007": null, "security": null, "customfield_10008": null, "customfield_10009": null, "attachment": [], "aggregatetimeestimate": null, "summary": "My Edited Test Case Summary", "creator": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/user?accountId=5fd73252849d640111623d4e", "accountId": "5fd73252849d640111623d4e", "emailAddress": "<my-email-address@email.com>", "avatarUrls": { "48x48": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "24x24": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "16x16": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "32x32": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png" }, "displayName": "<my-display-name>", "active": true, "timeZone": "Europe/Bucharest", "accountType": "atlassian" }, "subtasks": [], "reporter": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/user?accountId=5fd73252849d640111623d4e", "accountId": "5fd73252849d640111623d4e", "emailAddress": "<my-email-address@email.com>", "avatarUrls": { "48x48": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "24x24": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "16x16": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png", "32x32": "https://secure.gravatar.com/avatar/fddebe93606710ee03899d4c78667fcb?d=https%3A%2F%2Favatar-management--avatars.us-west-2.prod.public.atl-paas.net%2Finitials%2FBS-0.png" }, "displayName": "<my-display-name>", "active": true, "timeZone": "Europe/Bucharest", "accountType": "atlassian" }, "aggregateprogress": { "progress": 0, "total": 0 }, "customfield_10000": "{}", "customfield_10001": null, "customfield_10002": null, "customfield_10003": null, "customfield_10004": null, "environment": null, "duedate": null, "progress": { "progress": 0, "total": 0 }, "votes": { "self": "https://<my-host-name>.atlassian.net/rest/api/2/issue/MCP-8/votes", "votes": 0, "hasVoted": false }, "comment": { "comments": [], "maxResults": 0, "total": 0, "startAt": 0 }, "worklog": { "startAt": 0, "maxResults": 20, "total": 0, "worklogs": [] } }}